JN

John O. H. Niswonger

📍 Calabasas, CA: #82 of 4,119 inventorsTop 2%
🗺 California: #18,844 of 386,348 inventorsTop 5%
Overall (All Time): #138,246 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 26–28 of 28 patents

Patent #TitleCo-InventorsDate
4996795 Automatic garage door dead-bolt lock 1991-03-05
4494431 Portable radial arm saw 1985-01-22
4315732 Welding apparatus Francis W. Rowbottam, Nathan L. Skinner, Milt Wadler 1982-02-16